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We narrowed to 799 results for: Des

Showing: 61 - 80 of 799 results

  1. Overcoming the AAV Size Limitation for CRISPR Delivery

    Type
    Blog Post
    Published
    Sept. 16, 2020, 1 p.m.
    ...science.aaq0180  Fine EJ, Appleton CM, White DE, Brown MT, Deshmukh H, Kemp ML, Bao G (2015) Trans-spliced ...as potent and specific? The two AAV strategies described above showed successful target modification, indicating...from Streptococcus thermophilus and a rationally-designed truncated Cas9. Unfortunately, certain drawbacks... approximately 1350 amino acids in size, which includes SpCas9, and shortern orthologs approximately 1000...Split inteins are a pair of naturally occuring polypeptides that, when at the ends of two proteins, mediates... proof-of-concept split intein SpCas9 which had modest editing rates in HEK-293T cells when compared to...capabilities of full-length SpCas9. This set of plasmids includes AAV-Cas9C-VPR for targeted gene activation. Split...

  2. An Introduction to Adenovirus

    Type
    Blog Post
    Published
    Oct. 3, 2023, 1:15 p.m.
    ...adenoviral vector infected cells does not require de novo viral gene expression: Implications for gene...a physiological effect of SARS-CoV-2 toward destabilizing one’s natural immune response to Adenovirus ...viruses infecting humans (from seven species, designated as letters A–G) exist. The life cycle of AdVs...short-lived. It is worth noting that it is possible to design a vector that achieves persistent transgene expression...

  3. Harnessing TnpB for Genome Editing: A Compact and Versatile Tool for Your Research

    Type
    Blog Post
    Published
    July 29, 2025, 1:15 p.m.
    ... Voytas, D. F. (2019). Plant gene editing through de novo induction of meristems. Nature Biotechnology... Vectors The vectors pK-TnpB1 and pK-TnpB2 are designed for plant genome editing using TnpB. The main ...step-by-step guide for using a Dra2TnpB. Step 1: Design the 20-nt Guide Sequence Identify a TAM site (...plant-specific tools for predicting efficiency of guides are currently unavailable, you can use TEEP — a...schematic of pKb-TnpB1 and pKb-TnpB2, and guide design rules.   Step 3: Vector Digestion Digest either...

  4. Thoughts on the Future of Research 2015 Boston Symposium

    Type
    Blog Post
    Published
    Nov. 25, 2015, 4 p.m.
    ... out to me were: Decrease the Number of Postdocs De-incentivize going into PhD programs as the standard...environments. Slide from Paula Stephan’s Talk (All slides can be found here). Importantly, the panel offered... joining long programs if it is obvious that a desired career outcome is not easily achieved. Of note...clearly not equitable to that of other trainees despite the fact that the underrepresented individual is...

  5. Viral Vectors 101: Integrase-Deficient Lentiviral Vectors

    Type
    Blog Post
    Published
    May 13, 2025, 1:15 p.m.
    ...Brugman, M. H., Pike-Overzet, K., Chatters, S. J., de Ridder, D., Gilmour, K. C., Adams, S., Thornhill,...been a staple in molecular biology for over three decades. Widely used across various research applications...and human papillomavirus (HPV), to name a few (Desfarges & Ciuffi, 2012). One family of viruses, retroviridae... an example.  The lentiviral transfer plasmid encodes your insert of interest, flanked by long terminal...Specifically for our knowledge here, the Pol gene encodes three separate enzymes that are proteolytically...lentiviral particles.  The envelope plasmid typically encodes the vesicular stomatitis virus G protein (VSV-G...the retroviral life cycle for a more detailed description). Since the integrated portion does not contain...

  6. An Integrin Antibody Toolkit from IPI

    Type
    Blog Post
    Published
    March 28, 2024, 1:15 p.m.
    ... 26 recombinant antibodies (rAbs) either produced de novo using yeast display technology or produced from...response, tissue repair, and kidney development. Despite their ubiquity and significance, these receptors...available through Addgene’s repository. The collection includes 26 unique antibodies that bind discrete subunits...and migration, initiating intracellular signal cascades, and allowing agile responses to mechanical forces...

  7. Plasmids 101: Biotinylation

    Type
    Blog Post
    Published
    Nov. 15, 2018, 1:50 p.m.
    ...26224555. PubMed Central PMCID: PMC4884002. 10. Boer, E. de, Rodriguez, P., Bonte, E., Krijgsveld, J., Katsantoni...Northern blotting Cell surface labelling Attaching polypeptides to a substrate Flow cytometry/fluorescence-activated...your downstream application. Biotin labelled oligonucleotides can be used in a multitude of applications...commonly used this method to attach proteins or polypeptides to a solid substrate (Holden and Cremer, 2003...

  8. Building Global Connections with the International Mentorship Program USA-EUROPE

    Type
    Blog Post
    Published
    Nov. 6, 2015, 3:30 p.m.
    ...University of Oviedo, the European University Miguel de Cervantes, the University of Navarra, and the University...together with the universities, a bright future. IMP provides matched one-on-one international mentorship, with...recommended, a mentor with international experience provides his/her mentees with a broader, first-hand vision...

  9. Four Ways to Package Transgenes That Exceed the Size Limit of Adeno-associated Virus

    Type
    Blog Post
    Published
    Sept. 1, 2020, 1:15 p.m.
    ...doi.org/10.1002/emmm.201302948 Trapani I, Toriello E, de Simone S, Colella P, Iodice C, Polishchuk EV, Sommella...physical size of the genomes is still ~4.7kb. But despite this, larger functional transgene products were...HDR event can’t occur. Lastly, depending on its design, donor A may be capable of expressing a truncated...

  10. CRISPR 101: Epigenetics and Editing the Epigenome

    Type
    Blog Post
    Published
    June 24, 2020, 5:45 p.m.
    ...oncogenic silencing in vivo by programmable and targeted de novo DNA methylation in breast cancer. Oncogene 34...which uses light to regulate transcription, also includes light-regulated histone methyltransferases and...histone modifications. Like the TALE-LSD1 system described above, dCas9-LSD1 inactivates targeted enhancers...certainly not the only CRISPR-based technology designed to alter gene expression. Fusing dCas9 to a transcriptional...epigenetic modifiers? As with any experiment, your desired outcome will determine the tool that you should...

  11. Antibodies 101: Multiplex Immunofluorescence

    Type
    Blog Post
    Published
    May 23, 2023, 1:15 p.m.
    ... Brewer, M., McDonough, L., Zhu, Y., Neumann, E., De Caestecker, M., Gutierrez, D., & Spraggins, J. (2022...between the targets. Or, it might be sufficient to describe or classify the labeled structures visually; for...will vary depending on your specific experimental design. Like selecting an antibody, some of the requirements...

  12. Plasmids 101: Repressible Promoters

    Type
    Blog Post
    Published
    Dec. 20, 2022, 2:15 p.m.
    ...2022). https://doi.org/10.1038/s41598-022-07852-7 De Boer, Herman A., Lisa K. Comstock & Mark Vasser. ...to the promoter and turning transcription OFF. Despite their bacterial origins, Tet systems function well...promoters can be used in the repressible manner described above, as well as the inducible manner detailed...30 years since the original Tet-Off system was described by Gossen and Bujard, both the promoter and transactivator...cells, and can be used in the repressible manner described above, as well as the inducible manner detailed...tissue- or developmental stage-specific promoter and design a UAS reporter construct, the reporter will only...simple answer is that sometimes it is necessary or desirable to control or look at multiple genes at the same...

  13. Recombinase-based State Machines Enable Order-dependent Logic in vivo

    Type
    Blog Post
    Published
    July 28, 2016, 2:30 p.m.
    ...Green, Alexander A., et al. "Toehold switches: de-novo-designed regulators of gene expression." Cell 159.4...also be used to design primers to read states by qPCR or Sanger sequencing as described in the Material...hammerhead ribozyme parts are described in Nielsen et al (3) and Lou et al (4). Despite choosing proper register...machine design space is highly degenerate and often times there are multiple register designs that may...recognition sites from the register. If the RSM is designed in such a way that each possible order of inputs...segments in each state of a register enables the design of primer pairs that PCR amplify in some states...registers within a sample using a metric that we describe in the Materials and Methods section of our paper...

  14. 22 Hot Plasmid Technologies from 2014

    Type
    Blog Post
    Published
    Jan. 6, 2015, 5:21 p.m.
    ...bacterial mutagenesis or gene targeting Victor de Lorenzo's lab has engineered a modular mini-Tn5 vector...on channelrhodopsins – Chronos & Chrimson Through de novo sequencing of 127 algal transcriptomes, as well...components into a destination vector in a predefined order. Finally, the destination vectors are used ...engineering approach, they designed Opto-RTKs, which activate signaling cascades on exposure to low-intensity...years of distributing his Designer Receptors Exclusively Activated by Designer Drugs (DREADD) plasmids ...minimizing confounding secondary effects? An approach described as “knocksideways” (a British idiom for “taking...recombination elements such as FRT or Lox sites, and provides a modular system for easier exchange and re-use...

  15. Plasmids 101: Dimers and Multimers

    Type
    Blog Post
    Published
    Jan. 10, 2023, 2:15 p.m.
    ...Strausbaugh LD, Gray P, Vartak NB, Brown M, Talbot D, Berg DE. pBR322-derived multicopy plasmids harboring large...confirmations like linear and nicked plasmids, as described in this article.   Long-read sequencing Addgene...bacterial colonies using one of the detection methods described above can help ensure the isolation of the monomeric...copy number plasmids causes instability: CoIE1 encodes a determinant essential for plasmid monomerization...Carnes AE, Hodgson CP. Plasmid DNA vaccine vector design: impact on efficacy, safety and upstream production...

  16. An “elegans” Approach to Better CRISPR/Cas9 Editing Efficiency

    Type
    Blog Post
    Published
    Dec. 17, 2020, 1:30 p.m.
    ...https://doi.org/10.1093/nar/gku289 Chen C, Fenk LA, de Bono M (2013) Efficient genome editing in Caenorhabditis... DNA double-strand breaks up to 54 bp from the desired insertion site result in efficient editing. Repair...available through Addgene. In 2019, Farboud et al. described another similar co-conversion marker (repair of...whether it be by improved gRNA or repair template design, delivery, screening, and more. Here are some highlights...highlights from the past few years:  Repair template design The Meyer lab meticulously characterized several...of editing. First, they devised guidelines for designing single-stranded repair templates (Farboud et al...Tools such as SapTrap Builder greatly simplifies design of these constructs, allowing novice researchers...

  17. With an Eye Towards the Future, We Look Back at the March for Science

    Type
    Blog Post
    Published
    Oct. 24, 2017, 1:54 p.m.
    ...policies that “muzzle” government scientists to the de-funding of crucial environmental research programs...and minority communities, where these issues hit hardest. According to the Guttmacher Institute, most women...was supremely proud of Nashville that morning. Despite the rain, about 4,000 supporters of science showed... an agenda that halts current data collection, destroys existing data, and guts future funding.I marched...science belongs to the taxpayers who fund it, and we deserve to know the truth about our world. Jonathan Aguilar...

  19. Delivery Methods for Generating iPSCs

    Type
    Blog Post
    Published
    April 17, 2018, 1:37 p.m.
    ... cell reprogramming factors and wait for cells to de-differentiate. However it’s difficult, especially... with peptides that help mediate their transduction, such as the polyarginine peptide described in Zhou...reprogrammer, to decide which method to use. This post provides a brief overview of reprogramming methods with... Paramyxoviridae family of viruses, which also includes measles and mumps. Sendai transduces a wide range...in practice integration can occur. Okita et al describes a protocol for generating iPSCs by plasmid transfection...

  20. Easi-CRISPR: Generating Knock-In and Conditional Mouse Models

    Type
    Blog Post
    Published
    April 5, 2018, 12:42 p.m.
    ...using in mouse transgenics. Designing an Easi-CRISPR knock-in allele To design a knock-in allele at a given... PAM or guide mutation. Designing an Easi-CRISPR conditional allele The design for a floxed conditional...successfully used guides targeting the same or complementary strands, as well as guides facing towards or...How to design a conditional allele with Easi-CRISPR. As in the knock-in example, you’ll design your ...with your desired insertion feature (e.g., a fluorescent protein), you can amplify the desired region using... Figure 5: How to design Easi-CRISPR repair templates using Addgene plasmids. Design PCR primers to add...arduous. First, you’d construct a plasmid with your desired changes, long homology arms and a selection marker...
Showing: 61 - 80 of 799 results